BenQ LX720 User manual

Digital Projector
User Manual
LX720 / LW720 / LH720 V1.00

2 Warranty and Copyright information
Warranty and Copyright information
Limited warranty
BenQ warrants this product against any defects in material and workmanship, under normal usage and
storage.
Proof of purchase date will be required with any warranty claim. In the event this product is found to be
defective within the warranty period, BenQ's only obligation and your exclusive remedy shall be
replacement of any defective parts (labor included). To obtain warranty service, immediately notify the
dealer from which you purchased the product of any defects.
Important: The above warranty shall be void if the customer fails to operate the product in accordance
with BenQ's written instructions, especially the ambient humidity must be in-between 10% and 90%,
temperature in-between 0°C and 35°C, altitude lower than 4920 feet, and avoiding to operate the
projector in a dusty environment. This warranty gives you specific legal rights, and you may have other
rights which vary from country to country.
For other information, please visit www.BenQ.com.
Copyright
Copyright © 2018 by BenQ Corporation. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of BenQ Corporation.
Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied, with respect
to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any
particular purpose. Further, BenQ Corporation reserves the right to revise this publication and to make
changes from time to time in the contents hereof without obligation to notify any person of such
revision or changes.
*DLP, Digital Micromirror Device and DMD are trademarks of Texas Instruments. Others are
copyrights of their respective companies or organizations.
Patents
Please go to http://patmarking.benq.com/ for the details on BenQ projector patent coverage.

3Table of Contents
Table of Contents
Warranty and Copyright information ................................................................................ 2
Important safety instructions .............................................................................................. 4
Introduction .......................................................................................................................... 7
Shipping contents ....................................................................................................................................... 7
Projector exterior view ............................................................................................................................ 8
Controls and functions.............................................................................................................................. 9
Positioning your projector ................................................................................................. 12
Choosing a location .................................................................................................................................12
Obtaining a preferred projected image size....................................................................................... 13
Shifting the projection lens ....................................................................................................................16
Mounting the projector ..........................................................................................................................16
Adjusting the projected image ..............................................................................................................17
Connection .......................................................................................................................... 19
Connecting smart devices ...................................................................................................................... 21
Connecting InstaShow (WDC10) ........................................................................................................21
Operation ............................................................................................................................ 22
Starting up the projector ........................................................................................................................22
Calibrating LumiExpert ........................................................................................................................... 23
Using the menus .......................................................................................................................................23
Securing the projector ............................................................................................................................ 25
Switching input signal ...............................................................................................................................26
Controlling the projector via LAN ...................................................................................................... 27
Upgrading firmware via LAN................................................................................................................. 28
Controlling the projector remotely via a web browser .................................................................28
Shutting down the projector .................................................................................................................31
Direct power off ......................................................................................................................................31
Menu operation ................................................................................................................... 32
Basic menu ...............................................................................................................................................32
Advanced menu ..................................................................................................................................... 34
Maintenance ........................................................................................................................ 42
Care of the projector ..............................................................................................................................42
Light information ......................................................................................................................................43
Troubleshooting ................................................................................................................. 45
Specifications ...................................................................................................................... 46
Projector specifications ..........................................................................................................................46
Dimensions ................................................................................................................................................47
Timing chart............................................................................................................................................... 48

4 Important safety instructions
Important safety instructions
Your projector is designed and tested to meet the latest standards for safety of information technology
equipment. However, to ensure safe use of this product, it is important that you follow the instructions
mentioned in this manual and marked on the product.
1. Please read this manual before you
operate your projector. Save it for future
reference.
2. Do not look straight at the projector
lens during operation. The intense light
beam may damage your eyes.
3. Refer servicing to qualified service
personnel.
4. Always open the lens shutter (if any) or
remove the lens cap (if any) when the
projector light source is on.
5. The light source becomes extremely hot
during operation. Allow the projector to cool
for approximately 45 minutes prior to
removing the light source assembly for
replacement.
6. In some countries, the line voltage is NOT
stable. This projector is designed to operate
safely within a mains voltage between 100 to
240 volts AC, but could fail if power cuts or
surges of ±10 volts occur. In areas where
the mains voltage may fluctuate or cut
out, it is recommended that you
connect your projector through a power
stabilizer, surge protector or
uninterruptible power supply (UPS).
7. Do not block the projection lens with any
objects when the projector is under
operation as this could cause the objects to
become heated and deformed or even cause a
fire. To temporarily turn off the light source,
use the blank function.
8. Do not operate light source beyond the rated
light source life. Excessive operation of light
source beyond the rated life could cause them
to break on rare occasions.

5Important safety instructions
9. Never replace the light source assembly or
any electronic components unless the
projector is unplugged.
10. Do not place this product on an unstable cart,
stand, or table. The product may fall,
sustaining serious damage.
11. Do not attempt to disassemble this projector.
There are dangerous high voltages inside
which may cause death if you should come
into contact with live parts. The only user
serviceable part is the light source which has
its own removable cover.
Under no circumstances should you ever
undo or remove any other covers. Refer
servicing only to suitably qualified professional
service personnel.
12. Do not block the ventilation holes.
- Do not place this projector on a blanket, bedding or
any other soft surface.
- Do not cover this projector with a cloth or any other
item.
- Do not place inflammables near the projector.
If the ventilation holes are seriously
obstructed, overheating inside the projector
may result in a fire.
13. Always place the projector on a level,
horizontal surface during operation.
- Do not use if tilted at an angle of more than 10
degrees left to right, nor at angle of more than 15
degrees front to back. Using the projector when it is
not fully horizontal may cause a malfunction of, or
damage to, the light source.
14. Do not stand the projector on end vertically.
Doing so may cause the projector to fall over,
causing injury or resulting in damage to the
projector.
15. Do not step on the projector or place any
objects upon it. Besides probable physical
damage to the projector, doing so may result
in accidents and possible injury.
16. When the projector is under operation, you
may sense some heated air and odor from its
ventilation grill. It is a normal phenomenon
and not a product defect.

6 Important safety instructions
17. Do not place liquids near or on the projector.
Liquids spilled into the projector may cause it
to fail. If the projector does become wet,
disconnect it from the power supply's power
outlet and call BenQ to have the projector
serviced.
18. This product is capable of displaying inverted
images for ceiling/wall mount installation.
19. This apparatus must be earthed.
20. Do not place this projector in any of the
following environments.
- Space that is poorly ventilated or confined. Allow at
least 50 cm clearance from walls and free flow of air
around the projector.
- Locations where temperatures may become
excessively high, such as the inside of a car with all
windows rolled up.
- Locations where excessive humidity, dust, or cigarette
smoke may contaminate optical components, shorten
the projector's life span and darken the image.
- Locations near fire alarms
- Locations with an ambient temperature above 40°C /
104°F
- Locations where the altitudes are higher than 3000 m
(10000 feet).
3000 m
(10000 feet)
0 m
(0 feet)

7Introduction
Introduction
Shipping contents
Carefully unpack and verify that you have all of the items shown below. If any of these items are missing,
please contact your place of purchase.
Standard accessories
Optional accessories
Replacing the remote control batteries
1. Press and open the battery cover, as illustrated.
2. Remove the old batteries (if applicable) and install two
AAA batteries. Make sure that the positive and negative
ends are positioned correctly, as illustrated.
3. Replace the battery cover until it clicks into place.
Projector Remote control with
batteries User manual CD
Quick Start Guide Warranty card* Power cord
VGA cable
• The supplied accessories will be suitable for your region, and may differ from those illustrated.
• *The warranty card is only supplied in some specific regions. Please consult your dealer for detailed information.
1. 3D glasses
2. Dust filter
3. QCast mirror dongle/QCast video streaming
dongle/InstaShow (WDC10)

8 Introduction
Projector exterior view
• Avoid leaving the remote control and batteries in an excessive heat or humid environment like the kitchen,
bathroom, sauna, sunroom or in a closed car.
• Replace only with the same or equivalent type recommended by the battery manufacturer.
• Dispose of the used batteries according to the manufacturer's instructions and local environment regulations for
your region.
• Never throw the batteries into a fire. There may be danger of an explosion.
• If the batteries are dead or if you will not be using the remote control for an extended period of time, remove the
batteries to avoid damage to the remote control from possible battery leakage.
1. Lens cover
2. Vent (air exhaust)
3. IR remote sensor
4. Adjuster feet
5. Projection lens
6. Focus ring
7. Zoom ring
8. Light sensor
9. Lens shift adjustment knob
10. External control panel
(See Controls and functions on page 9.)
11. QCast (HDMI 2/MHL-input port for HDMI
dongle)
12. USB cable (A to Micro B type) connect to the
power port of HDMI wireless dongle
13. Vent (air inlet)
14. Speaker
15. Wall mount holes
16. Security bar
17. AC power jack
18. Kensington anti-theft lock slot
19. USB Type A port
20. Audio input jack
Audio output jac
21. Microphone
22. Audio (L/R) input jack
23. HDMI 1 input port
24. Video input jack
25. S-Video input jack
26. RGB (PC) signal input jack
27. RS-232 control port
28. RGB (PC) signal output jack
29. RJ-45 LAN input jack
30. USB Mini-B port
31. 12V trigger
32. PW02 mount holes
33. InstaShow mount holes
2
3
4
5
16
7
8
9
10
11
13
14
4
15
16
15
15
15
17
18
19
20
21
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24
25
26
27
28
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30
31
4
12
32
33

9Introduction
Controls and functions
Projector & Remote control
1. POWER
Toggles the projector between standby mode
and on.
ON/ Off
Toggles the projector between standby mode
and on.
2. POWER indicator light/TEMPerature
warning light/LIGHT indicator light
(See Indicators on page 44.)
3. IR remote sensor
4. SOURCE
Displays the source selection bar.
5. BACK
Goes back to previous OSD menu, exits and
saves menu settings.
6. Arrow keys ( , , , )
When the On-Screen Display (OSD) menu is
activated, these keys are used as directional
arrows to select the desired menu items and
to make adjustments.
Keystone keys ( , )
Displays the keystone correction page.
Volume keys /
Decreases or increase the projector volume.
7. ECO BLANK
Used to hide the screen picture.
Do not block the projection lens from
projecting as this could cause the blocking
object to become heated and deformed or
even cause a fire.
5
4
6
8
7
9
10
3
2
1
All the key presses described in this document
are available on the remote control or projector.
1
6
5
10
9
7
8
4
11
12
13
14
15
16
17
18
20
212
22
19

10 Introduction
8. OK
Confirms the selected On-Screen Display
(OSD) menu item.
9. AUTO
Automatically determines the best picture
timings for the displayed image when PC signal
(analog RGB) is selected.
10. MENU
Turns on the On-Screen Display (OSD) menu.
11. Source selection button: PC 1/HDMI
1/VIDEO/HDMI 2/MHL/NETWORK
Selects PC 1/HDMI 1/VIDEO/HDMI
2/MHL/NETWORK input source for display.
12. LASER
Emits visible laser pointer light for
presentation purposes.
13.
Toggles projector audio between on and off.
14. INFO
Displays the projector information.
15. MHL
Operates for MHL function.
16. ZOOM+/ZOOM-
Magnifies or reduces the projected picture
size.
17. PAGE +/PAGE-
Operate your display software program (on a
connected PC) which responds to page
up/down commands (like Microsoft
PowerPoint).
18. FREEZE
Freezes the projected image.
19. LIGHT MODE
Displays the Light Mode menu for selecting a
suitable light operating mode.
20. QUICK INSTALL
Quickly selects several functions to adjust the
projected image and displays the test pattern.
21. ASPECT
Selects the display aspect ratio.
22. PICTURE
Selects the picture mode.